Seiko Cal. 4478 - 870

Seiko 4478-870

The 4478-870 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Navy dial protected by a Hardlex crystal and offers 50m of water resistance. [seikata-wm-a53909bab907]

Also known as: Monster, Bellmatic

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
36mm
Case Thickness
15.0mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
50m
Dial Color
Navy
Jewels
30j
Frequency
21,600 bph
Power Reserve
42 hours
Year
1978

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